Can't contribute much, but I could give a penny or two if you added some crypto donations option (I live in a very sanctioned place and cannot pay by normal means). I believe this could yield some extra donations from others, too!
Also, in the subtitles, there in an incorrect link to your site at 2:32 - just a heads up so that viewers with subtitles could get to the right place!
Finally, an idea to explore - is S3 hosting the cheapest solution? While it's convenient to some extent, with the traffic you face and generally low stakes with this being a grassroots project, maybe throwing some old drives in two mirrored boxes would serve you better? I'm no expert, but $250/mo for hosting something like a hundred vids sounds insane to me. I know it's cool to have everything enterprise-grade, especially when you're a somewhat big YouTuber, but this could be a fun pet project, and it's not that we the PeerTubers aren't accustomed to some rough edges. You can make a trove of content out of it, too!
In any case, I wish you the best of luck!